diff --git a/odatareceptionist/procedures/PrintQueue.xsjslib b/odatareceptionist/procedures/PrintQueue.xsjslib
new file mode 100644
index 0000000..d4da330
--- /dev/null
+++ b/odatareceptionist/procedures/PrintQueue.xsjslib
@@ -0,0 +1,13 @@
+function PrintQueueUpdate(param){ 
+    $.trace.debug('entered function PrintQueueUpdate'); 
+    // let before = param.beforeTableName;
+    let after = param.afterTableName;
+    // Update PrintQueue
+    let pStmt = param.connection.prepareStatement('SELECT * FROM "' + after + '"' ); 
+    let rs = pStmt.executeQuery();
+    if (rs.next()) {
+        var TicketUsed = rs.getNString(4);
+    }
+    $.trace.debug('TicketUsed: ' + TicketUsed); 
+    $.trace.debug('leave function PrintQueueUpdate'); 
+} 
\ No newline at end of file
diff --git a/odatareceptionist/service.xsodata b/odatareceptionist/service.xsodata
index c2be72c..e553110 100644
--- a/odatareceptionist/service.xsodata
+++ b/odatareceptionist/service.xsodata
@@ -49,12 +49,14 @@ service  {
     "com.sap.sapmentors.sitreg.odatareceptionist.procedures::TicketRead" as "Ticket" key ("ParticipantID")
     create forbidden 
     update using "com.sap.sapmentors.sitreg.odatareceptionist.procedures::TicketUpdate"
+    events ( after "com.sap.sapmentors.sitreg.odatareceptionist.procedures:PrintQueue.xsjslib::PrintQueueUpdate" )
     delete forbidden;
     
     association "Event_Ticket" principal "Events"("ID") multiplicity "1"
         dependent "Ticket"("EventID") multiplicity "*";
     association "Participant_Ticket" principal "Participants"("ID") multiplicity "1"
         dependent "Ticket"("ParticipantID") multiplicity "1"; 
+
     // Read PrintQueue
     "com.sap.sapmentors.sitreg.data::SITreg.PrintQueue" as "PrintQueue"
     create forbidden